The current prize is the game's biggest since December 2013, when holders of two tickets sold in California and Georgia shared a $648 million jackpot. The largest Mega Millions jackpot, worth $656 million, was sold the prior year.

In January, three winning Powerball tickets were sold in Florida, Tennessee and California to claim a share of nearly $1.6 billion, the largest prize to have been won on a single lottery game anywhere in the world.

On social media on Tuesday, ticket holders fantasized about their plans if they won the prize, including plans to buy expensive clothing and even sports teams.